Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1979-08-27
1981-10-13
Taylor, Hosea E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528126, 528128, 528173, 528207, 528222, 528274, C08G 6346, C08G 6318
Patent
active
042949572
ABSTRACT:
Described herein is a process for preparing polyarylates of improved color which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid in the presence of from about 10 to about 60 weight percent of at least one cycloaliphatic, substituted aromatic or heteroaromatic compound, which compounds contain at least one benzylic and/or tertiary hydrogen atom, at a temperature of from about 260.degree. to about 350.degree. C. Optionally, the process may be carried out in the presence of a magnesium, manganese, or zinc catalyst.
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Berger Mitchell H.
Maresca Louis M.
Matzner Markus
Papuga Donald M.
Taylor Hosea E.
Union Carbide Corporation
Yarbrough Amelia B.
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